Would work in Firefox too with if the author had bothered to add the -moz-animation rules.
There are a ton of people who like to bitch at open source developers about not including or fixing something and for projects like this tht isn't cool. This is just a guy showing off some cool thing he did. If you want to use it, have at it! Make it better? Contribute! Have a complaint? Go fuck yourself.
It's not meant for people who have constructive criticism or are just discussing the merits of the code or technique like us.
Yeah, this is an excellent way to deflect criticism from open source projects. I've seen it frequently stop what could be a useful discussion in its tracks.
(And this isn't a comment to you specifically, but that sentiment combined with closed-source-software-as-unethical turns my stomach.)
Again, I know what you mean, I've seen it, and it's lame but I see this as an exception where it makes sense.
// Generate keyframes
// Sass interpolation doesn't work with keyframe. CF : https://github.com/nex3/sass/issues/46
// so I use a tricks ==> "appear-'#{$i}'" - And it doesn't work in Firefox.
It's impossible to generate @-moz-Keyframes + interpolation with Sass yet. That's why the experiment works only in Webkit.